#ifndef HISTOGRAM_H
#define HISTOGRAM_H
/**
 * @brief
 *
 * This file is a part of PFSTOOLS package.
 * ----------------------------------------------------------------------
 * Copyright (C) 2003,2004 Rafal Mantiuk and Grzegorz Krawczyk
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * ----------------------------------------------------------------------
 *
 * @author Rafal Mantiuk, <mantiuk@mpi-sb.mpg.de>
 *
 * $Id: histogram.h,v 1.2 2005/09/02 13:10:35 rafm Exp $
 */

#include <assert.h>
#include "Libpfs/array2d_fwd.h"
#include "noncopyable.h"

class Histogram : public lhdrengine::NonCopyable {
    int bins;
    int accuracy;

    float *P;

   public:
    explicit Histogram(int bins, int accuracy = 1);
    ~Histogram();

    void computeLog(const pfs::Array2Df *image);
    void computeLog(const pfs::Array2Df *image, float min, float max);

    int getBins() const { return bins; }

    float getMaxP() const;
    float getP(int bin) const {
        assert(bin < bins);
        return P[bin];
    }
};

#endif
